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...kill. Now parasitic worms that prey on livestock are becoming drug-resistant, too, according to University of Georgia parasitologist Ray Kaplan. Just as with bacteria, bugs and weeds, some worms have evolved through a process of natural selection - worms...

...Sciences. Just because the vaccine stimulates a rabbit's immune system doesn't mean it would work in people, cautioned parasitologist Anthony Holder of London's National Institute for Medical Research. The CDC hopes further testing in primates will prove...

...be deadly. "If it does actually affect humans here, the potential for severe illness is there," said Sam Telford, a parasitologist at the Harvard School of Public Health, who wrote about the new virus in the April-June issue of the CDC's journal...